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qemu-android / qemu-android / 301db7c2dd769d48e97c9a766520f8affff76cd7
commit301db7c2dd769d48e97c9a766520f8affff76cd7[log] [tgz]
authorRyan Harper <ryanh@us.ibm.com>Mon Mar 07 10:01:04 2011 -0600
committerKevin Wolf <kwolf@redhat.com>Tue Mar 15 13:21:14 2011 +0100
treea6df649573db46c5dfb4025e38269540613ddc01
parent4e59b545868a5ee5f59b346337f0c44209929334 [diff]
Don't allow multiwrites against a block device without underlying medium

If the block device has been closed, we no longer have a medium to submit
IO against, check for this before submitting io.  This prevents a segfault
further in the code where we dereference elements of the block driver.

Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1 file changed
tree: a6df649573db46c5dfb4025e38269540613ddc01
  1. audio/
  2. block/
  3. bsd-user/
  4. darwin-user/
  5. default-configs/
  6. docs/
  7. fpu/
  8. fsdev/
  9. gdb-xml/
  10. hw/
  11. linux-user/
  12. net/
  13. pc-bios/
  14. QMP/
  15. roms/
  16. scripts/
  17. slirp/
  18. sysconfigs/
  19. target-alpha/
  20. target-arm/
  21. target-cris/
  22. target-i386/
  23. target-lm32/
  24. target-m68k/
  25. target-microblaze/
  26. target-mips/
  27. target-ppc/
  28. target-s390x/
  29. target-sh4/
  30. target-sparc/
  31. tcg/
  32. tests/
  33. ui/
  34. .gitignore
  35. .gitmodules
  36. a.out.h
  37. acl.c
  38. acl.h
  39. aes.c
  40. aes.h
  41. aio.c
  42. alpha-dis.c
  43. alpha.ld
  44. arch_init.c
  45. arch_init.h
  46. arm-dis.c
  47. arm-semi.c
  48. arm.ld
  49. async.c
  50. balloon.c
  51. balloon.h
  52. bitmap.c
  53. bitmap.h
  54. bitops.c
  55. bitops.h
  56. block-migration.c
  57. block-migration.h
  58. block.c
  59. block.h
  60. block_int.h
  61. blockdev.c
  62. blockdev.h
  63. bswap.h
  64. bt-host.c
  65. bt-host.h
  66. bt-vhci.c
  67. buffered_file.c
  68. buffered_file.h
  69. cache-utils.c
  70. cache-utils.h
  71. Changelog
  72. check-qdict.c
  73. check-qfloat.c
  74. check-qint.c
  75. check-qjson.c
  76. check-qlist.c
  77. check-qstring.c
  78. cmd.c
  79. cmd.h
  80. CODING_STYLE
  81. compatfd.c
  82. compatfd.h
  83. config.h
  84. configure
  85. console.c
  86. console.h
  87. COPYING
  88. COPYING.LIB
  89. cpu-all.h
  90. cpu-common.h
  91. cpu-defs.h
  92. cpu-exec.c
  93. cpus.c
  94. cpus.h
  95. cris-dis.c
  96. cursor.c
  97. cursor_hidden.xpm
  98. cursor_left_ptr.xpm
  99. cutils.c
  100. def-helper.h
  101. device_tree.c
  102. device_tree.h
  103. dis-asm.h
  104. disas.c
  105. disas.h
  106. dma-helpers.c
  107. dma.h
  108. dyngen-exec.h
  109. elf.h
  110. envlist.c
  111. envlist.h
  112. exec-all.h
  113. exec.c
  114. gdbstub.c
  115. gdbstub.h
  116. gen-icount.h
  117. HACKING
  118. hmp-commands.hx
  119. host-utils.c
  120. host-utils.h
  121. hpet.h
  122. hppa-dis.c
  123. hppa.ld
  124. i386-dis.c
  125. i386.ld
  126. ia64-dis.c
  127. ia64.ld
  128. input.c
  129. ioport-user.c
  130. ioport.c
  131. ioport.h
  132. iorange.h
  133. iov.c
  134. iov.h
  135. json-lexer.c
  136. json-lexer.h
  137. json-parser.c
  138. json-parser.h
  139. json-streamer.c
  140. json-streamer.h
  141. kvm-all.c
  142. kvm-stub.c
  143. kvm.h
  144. libfdt_env.h
  145. LICENSE
  146. linux-aio.c
  147. m68k-dis.c
  148. m68k-semi.c
  149. m68k.ld
  150. MAINTAINERS
  151. Makefile
  152. Makefile.dis
  153. Makefile.hw
  154. Makefile.objs
  155. Makefile.target
  156. Makefile.user
  157. microblaze-dis.c
  158. migration-exec.c
  159. migration-fd.c
  160. migration-tcp.c
  161. migration-unix.c
  162. migration.c
  163. migration.h
  164. mips-dis.c
  165. mips.ld
  166. module.c
  167. module.h
  168. monitor.c
  169. monitor.h
  170. nbd.c
  171. nbd.h
  172. net-checksum.c
  173. net.c
  174. net.h
  175. notify.c
  176. notify.h
  177. os-posix.c
  178. os-win32.c
  179. osdep.c
  180. osdep.h
  181. oslib-posix.c
  182. oslib-win32.c
  183. path.c
  184. pci-ids.txt
  185. pflib.c
  186. pflib.h
  187. poison.h
  188. posix-aio-compat.c
  189. ppc-dis.c
  190. ppc.ld
  191. ppc64.ld
  192. qbool.c
  193. qbool.h
  194. qdict-test-data.txt
  195. qdict.c
  196. qdict.h
  197. qemu-aio.h
  198. qemu-barrier.h
  199. qemu-char.c
  200. qemu-char.h
  201. qemu-common.h
  202. qemu-config.c
  203. qemu-config.h
  204. qemu-doc.texi
  205. qemu-error.c
  206. qemu-error.h
  207. qemu-img-cmds.hx
  208. qemu-img.c
  209. qemu-img.texi
  210. qemu-io.c
  211. qemu-lock.h
  212. qemu-log.h
  213. qemu-malloc.c
  214. qemu-nbd.c
  215. qemu-nbd.texi
  216. qemu-objects.h
  217. qemu-option.c
  218. qemu-option.h
  219. qemu-options.h
  220. qemu-options.hx
  221. qemu-os-posix.h
  222. qemu-os-win32.h
  223. qemu-queue.h
  224. qemu-sockets.c
  225. qemu-tech.texi
  226. qemu-thread-posix.c
  227. qemu-thread-posix.h
  228. qemu-thread-win32.c
  229. qemu-thread-win32.h
  230. qemu-thread.h
  231. qemu-timer-common.c
  232. qemu-timer.c
  233. qemu-timer.h
  234. qemu-tool.c
  235. qemu-x509.h
  236. qemu.sasl
  237. qemu_socket.h
  238. qerror.c
  239. qerror.h
  240. qfloat.c
  241. qfloat.h
  242. qint.c
  243. qint.h
  244. qjson.c
  245. qjson.h
  246. qlist.c
  247. qlist.h
  248. qmp-commands.hx
  249. qobject.h
  250. qstring.c
  251. qstring.h
  252. range.h
  253. readline.c
  254. readline.h
  255. README
  256. rules.mak
  257. rwhandler.c
  258. rwhandler.h
  259. s390-dis.c
  260. s390.ld
  261. savevm.c
  262. sh4-dis.c
  263. simpletrace.c
  264. simpletrace.h
  265. softmmu-semi.h
  266. softmmu_defs.h
  267. softmmu_exec.h
  268. softmmu_header.h
  269. softmmu_template.h
  270. sparc-dis.c
  271. sparc.ld
  272. sparc64.ld
  273. spice-qemu-char.c
  274. sysemu.h
  275. targphys.h
  276. tcg-runtime.c
  277. thunk.c
  278. thunk.h
  279. TODO
  280. trace-events
  281. translate-all.c
  282. uboot_image.h
  283. usb-bsd.c
  284. usb-linux.c
  285. usb-stub.c
  286. VERSION
  287. version.rc
  288. vgafont.h
  289. vl.c
  290. x86_64.ld